Home Articles List Article Information
International Journal of Materials Technology and Innovation
Journal Archive
Volume Volume 5 (2025)
Volume Volume 4 (2024)
Issue Issue 2
Special Issue IQ-ICF 2024
Issue Issue 1
Volume Volume 3 (2023)
Volume Volume 2 (2022)
Volume Volume 1 (2021)
Wahba, M., Hafez, K., EI-Batahy, A. (2024). Failure Analysis of a Fuel Supply Tube of an Aircraft Engine. International Journal of Materials Technology and Innovation, 4(2), 1-8. doi: 10.21608/ijmti.2024.325019.1108
Mohamed Wahba; Khalid Hafez; Abdel-Monem EI-Batahy. "Failure Analysis of a Fuel Supply Tube of an Aircraft Engine". International Journal of Materials Technology and Innovation, 4, 2, 2024, 1-8. doi: 10.21608/ijmti.2024.325019.1108
Wahba, M., Hafez, K., EI-Batahy, A. (2024). 'Failure Analysis of a Fuel Supply Tube of an Aircraft Engine', International Journal of Materials Technology and Innovation, 4(2), pp. 1-8. doi: 10.21608/ijmti.2024.325019.1108
Wahba, M., Hafez, K., EI-Batahy, A. Failure Analysis of a Fuel Supply Tube of an Aircraft Engine. International Journal of Materials Technology and Innovation, 2024; 4(2): 1-8. doi: 10.21608/ijmti.2024.325019.1108

Failure Analysis of a Fuel Supply Tube of an Aircraft Engine

Article 2, Volume 4, Issue 2, December 2024, Page 1-8  XML PDF (1.34 MB)
Document Type: Special issue
DOI: 10.21608/ijmti.2024.325019.1108
View on SCiNiTO View on SCiNiTO
Authors
Mohamed Wahba email orcid 1; Khalid Hafezorcid 2; Abdel-Monem EI-Batahy2
1cmrdi
2CMRDI
Abstract
This paper presents a failure analysis of a fractured fuel supply tube and its associated assembly clip from an aircraft engine. The assembly clip, made of 17-7 PH stainless steel, exhibited fracture initiation at the inner surface of its terminal hole. Chemical analysis showed conformity to standard material specifications, and microstructural examination revealed a tempered martensite matrix. Scanning electron microscopy identified radial fatigue marks and evidence of fretting fatigue, transitioning to brittle fracture near the crack's termination. The fuel tube failed near the butt-welded joint, with no surface defects detected by dye penetrant testing. Chemical analysis confirmed the material met specifications for type 347 stainless steel. Microstructural analysis showed fracture initiation in the heat-affected zone, with low-cycle fatigue and grain boundary cracking observed. Scanning electron microscopy revealed fatigue striations and a transition to brittle fracture near the outer surface, indicating a combined fatigue and brittle failure mechanism. This investigation highlights the role of fatigue in both the fuel tube and clip failures, providing insights into improving component durability in aerospace applications.
Keywords
Fuel tube failure; Fretting fatigue; Heat-affected zone
Main Subjects
Welding and non-destructive testing.
Statistics
Article View: 171
PDF Download: 156